Influencing Factors on the Interface Microhardness of Lightweight Aggregate Concrete Consisting of Glazed Hollow Bead

Table 3

Physical properties of NS.

Name	Nanosilica
Appearance	White powder
Primary particle size/nm	20
Purity/%	>99.5
PH	4–7
Specific surface area/(m^2/g)	300
Bulk density/(g/cm^3)	0.10
Surface property	Hydrophilic